pyrazin
Pyr"a*zine, n. Also -zin. [Pyridine + Gr. not + life.] (Org. Chem.) Defn: A feebly basic solid, C4H4N2, obtained by distilling piperazine with zinc dust, and in other ways. Also, by extension, any of various derivatives of the same.
Pyr"a*zine, n. Also -zin. [Pyridine + Gr. not + life.] (Org. Chem.) Defn: A feebly basic solid, C4H4N2, obtained by distilling piperazine with zinc dust, and in other ways. Also, by extension, any of various derivatives of the same.